Bleeder



Sept. 13, 1927. A. BOYD ,536

BLEEDER Filed Feb; '7, 1927 '20 u Y Withtheseaiidotherbbjectsiii iew, m

Patented Sept. 13, 19 27.

UN TED STATES;

a ALLEN: new); es-Sioux any; lawn;

a shaman,

' Ap l icati-on filed February, 7, 1 927;sgri 1 Nn.;166,405,.,

My invention relatesto railway ear bleed? ers and my purpose is to provide an: attach-.1

ment for the 'ii'sual bleed'ersfor locking th valve in open position iintil the brakeeyl'inder has been fully bled'fand then releasing the locking mechanism] to'allow closing of thevalveg a More specifically, it. is my object to pro- Vide such a device in" which a latch is attached to the valve lever and cooperates with a keeper in such a way as to become latched when the valve lever, has been moved to open the Valve; r

A release mechanism, actuatedby the movement of the brake piston rod' toward the cylinder as theairpressure is released, finally'operatesto release the latched con-- nection pf the latch and keeper, thilS allowing the valve to PO t OIL' I inventionfcoiisists in the Construction, .ar

rangement and combination of the Various parts of my device; whereby the obj ects CODI- templated' are attained, as hereinafter more .ful1yset forth, pointedout infiny claims,

- and illustrated in the aecompanyn g drawg 1, isganeleyation of a longitudinal beam of a ear structure, the usual brake mechanism, including brake ,eyliiiderslahd brake piston: rod being shown attached thereto in the usual manner and my invention! being embbdied therewith; onset the cylinder supporting brackets being shown insertion. I a v Fig.2 isa. pl 11 View eithe brake and bleedermechamsm. a. l 1 v ig...3*is an enlarged sectional view taken an the line 3-3 of Fig.2.; V

Iii-the operation of the vordinary airbnake system upon railway trains, it is customary to release the brakes nponstanding box earsfa id the like what is termed bleed: operation involves the release pf air .from the brake eylindei's through. I a bl eding Valve which is shown in itsnsual .zformin the drawings. I have nsed the neference, character. 10 to indicate generally a longitudinal beam -oi a, railway car which supports the air brake apparatus, a large cylinder 11 at-small cyl- 12, and piston; rod slidab y mounted in the cylinders ;-since conventional brake/mechanism is illustrated. it is {thought unnecessary teishew ordescribe its return to normal clbsed' st iieture e ai The el'eyis to w fhflthe I r p ston, ed'13 is attached to th b e m is shown. at 14. The, br ke mechanism. is

supported by ordinary for 'ofra e 5 lt d'to. flange. on the cylinder 12; bolt} edais'. at, 16 to the beam T110 and a maller bracl'iet l 1T 'siiliil'a l v seemed. betw n the 1 cylinder ll'and' the beam 10. i V a x Th bleeding valve 18; (whi i O -v narily' threadled dire tly i to the y inders n min received in a threaded, boss 19) is extended to. positions overthe small cylin- (161 121 any suitable means such s the elbow 20,. threaded nto the boss 19,. the

p p 21 threadedinto the elbow 20 a th I elbow, 22 whfieh receiyes the valve 18. The

'e'l'bowf22 isseeured to abracket 22- in; any

suitabl manner such as. by the yoke 24am the briasket 23 In: ur is scuredtethef bolt 25. which ordinarily hold the packing gland 26' in plate at the end of theslllalleylindw; ,TQ this e icit/he. b ack t 2:8 is made-some- W s p ha g t e, l e; ziti'w i ex: tends over the 1 end" 01" the cylinder and" the downwardly bent flange which. receives theheltsizfi. a J y a The bracket 23 seri s otn y t upp rt the bleeder Valve in its new position, but supponts the atchin mechanism: s nsfl myinvention; will be thus samba: the attachment involves 11.01 change in the structure at the brake mechanism, other than the addi iciil of the pipe Q' theeI- 110M 20 and 22a d the removal of the olt 25. No, illihg is req ired to attach t e device, i

The valve levergja. double arm type om.- p ising an inverted U a shaped member is shown at 29 ,v VThe speeific const u t h f the valve lever is not illustrated, being igndenstoodi that} movement v0 e th i hf the ms ofthe lever either toward.or v om the bedy'of the salve w llacso plish he/object of" 0.. v ning" the valv This is to. enable bleedi fig from eith r side of e ear nd a pair. of bieeding rods'30 and 31 are eon nected to the respective armshof the valve lever for this p rpose Aseone rm of the lever is moved toward the body o t alve, theother wil mo e aways rom'it- One arm zof th -"shaped bracketis -.e. end d h W -P e; Fus d to thearm 2 apd nod '30; is .remomegl and elohgei pin 34 p substituted, the end of the lever arm 53? be ing bifurcated, as at 335, to receive the end of the arm 29.

. The rod 30 bent downwardly as at 2:3 so as not; to intertere with the operation ot the latch arm 33. I provide two detents tor the latch arm. 323, termed as shoulders 37 and 38 on either side of an. integral lug, 30. The lug, 3t) mirmally rests in a slot 10 in the keeper 32 and the latch arm is weighted as at ell so that when the valve lever is moved in either direction to open the valve, the lug 39 will. drop past the edge oi the slot all) on one side or the other of the keeper 32, allowing either ot the deteut shoulders to engage the keeper and thereby lock the lever in. such position.

The weight all is made adjustahlehy a Set screw l2 by means (it which the weight is secured to the arm 2323. 13y sliding; the Weight lougritudinally oi" the arm, the con reet weight for most ellicient operation under such weather conditions as where ice is likely to term on the parts obtained.

The release mechanism includes a lift lever 43 lulcrumcd at ell to a pair ol cars 45, bent upwardly from the leg 27 to the bracket 23. One end of the liiit lever 43 extends under the latch arm 33, being; spaced sutliciently away from the keeper 39 so that it will not interfere with the dropping oi the lugs 39 past the edge of the slot 40. (See Fig.

It will also be noted that the'end of the lever 43 is spaced downwardly sutliciently to allow the lever to drop to latching position.

I provide a cam d6 which is secured to the piston rod 13, as by threading, and which is preferably cone shaped as shown. A lever 4:7 is pivoted at l8 to a bracket l9, secured to the packing gland 326 and has a rounded end 50 to engage the cam 4L6 when the piston rod has moved toward the cylinders a undetermined distance. The other end of the lever 45? is connected to the lever 43 by an adjustable linl: 51., preferably ineluding at turnbuckle 52' for longitudinal adjustment. Such longitudinal adjustment is advantageous in setting the two levers in proper positions relative to both latch arm and 'am. The single adjustment sailicient for this purpose although longitudinal adjustment oi the cam on the piston rod may be necessary in the original setting up of the device.

It will now be seen. that as the piston rod moves into the cylinders upon release of pressure by the valve, the am -16 will eventually reach the position shown in Fig. l and thereupon raise the outer end of the lever l7, causing the outer end of the lever 43 to correspondingly raise. The lever 4:3 will engage the arm 33, lifting it upwardly until a position is reached in which the lug 39 may slide again into the slot 40 where upon the lever 43 may recede to its original position so as not to interfere with the subsequent bleeding of? the valve.

hlome changes may be made in the con struction and arrangement of the parts of my invention without departing from the real spirit and purpose of: my invention, and it is my intention to cover by my claims, any modified. terms of structure or use of nuechanical equivalents, which may he reasonably included within their scope.

l claim as my invention:

l. in a hleeder, in coml ination with an air hralte cylinder prtn'ided with a brake piston rod and a hleeder valve, a latch arm pivoted at one end to an operating lever ol' said valve, a keeper supporting the intermediate portion of said arm, the arm being provided with a detent to engage the keeper when the valve has been opened, and to thereby lock the valve in open position, a cam secured to the brake piston rod, and means actuated by said cam to lift the arm and release the detent from engagement with the keeper, when the piston rod has moved a predetermined distance toward the cylinder. f

In a bleeder, in combination with an air brahe cylimler provided with a brake. piston rod and a blecder valve, a latch arm pivoted at one end to an operating lever of said valve, a keeper simporting the intermediate portion of said arm, the arm being provided with a detent to engage the keeper when the valve has been opened, and to thereby lock the valve in open position, and means actuated by the piston rod to lift the arm and release the detent. from engagement with the keeper, when the piston rod has moved, a predetermined distance toward the cylinder.

3. In a hleeder, in combination with an air bralte cylinder provided with a brake piston rod ant ableeder valve, a latch device connected to an operating lover of the valve, a keeper cooperating with said latch device to lock the valve in open position, and means actuated by the piston rod to release the latch device when the piston rod has moved a predetermined (llSttlllCOtOWtllTl the cylinder.

4:. In a. bleeder, in combination with an air brake cylinder Jrovided with. a brake piston rod and a blceder valve, a latch device connccted to an operating lover of the valve, a keeper cooperating with said latch'device to lock the valve in open position, av cam secured to the piston rod, and means actuated by said cam to release the latch device when the piston rod has moved a predetermined dlstance to ard the cylinder.

5. In a bleeder, in C(Hl'lbllltlhlOll with an air brake cylinder provided with. a brake piston rod and a bleeder valve, a latch arm pivoted at one end to an operating lever of said valve, a keeper supporting the intermediate portion of saidarm,the arm being provided with a detentto engage the keeper When the valve has been opened, and to thereby lock the valve in open position, a cam secured to the brake piston rod, a lift lever fulcrumed upon the cylinder and having one end positioned to engage the latch arm, a lever fulcrumed atthe end of thecylinder and having one end positioned to be engaged by the cam, and a link connecting the other ends of the respective lift and cam levers.

6. In a bleeder, in combination With an air brake cylinder provided with a brake piston rod and a bleedervalve, a latch arm pivoted at one end to an operating leverof said valve, a keeper supporting the intermediate portion of said arm, the arm being provided with a detent to engage the keeper when the valve has been opened, and to thereby lock the valve in open position, a

cam secured to the brake piston rod, a lift lever fulcrumed upon the cylinder and hav-' ing one end positioned to engage the latch arm, a lever fulcrumed at the end of the cylinder and having one end positioned to be engaged by the cam, and a link connecting the other ends of therespective lift and cam levers, said link being adjustable in length. i

7. In a bleeder, in combination with an air brake cyllnderprovlded wlth an air brake 8. In a bleeder, in combination With an air brake cylinder provided With an air brake piston rod and a bleeding valve, means to lock the valve in open position, and means actuated by the piston rod to release said locking means when the piston rod has moved a predetermined distance toward'the cylinder.

Signed this 3rd day of February 1927, in the county of WVoodbury and State of Iowa.

ALLEN BOYD.

DISCLAIMER.

1,642,536.Allen Boyd, Sioux City, Iowa. BLEEDER. Patent dated September 13,

1927. Disclaimer filed April 19, 1929, by the patentee. Hereby enters this disclaimer to the following subject matter of said Letters Patent:

A. Claim 8. -5 B. The invention of claim 7, except when sald invention is limited to a cam having an inclined face to engage the means for releasing the locking means of said claim. C. The invention of clalm 3, except when said 1nvent1on is limited to a construction wherein the keeper of said claim 1s supported independently of the valve operating lever of said claim.

D. The invention of clann 4, except when saldinventlon is limited to a construction in which the keeper of said claim is supported independently of valve operating lever of said claim. [Ojicial Gazette May 7,1993] 

